Hi everybody,
Typically the DAC problem ( Serial B050000 and above ) cause a mess in all controls.
As everybody knows, the electrolytics leak contaminate the board and need to be cleaned very well.
I used this four step process ( don't be afraid! ).
1) With WD40 keeping the board with the product about 5 hours.
2) Rinse with neutral - detergent, repeat about 3 times.
3) Rinse again with only pure water ( destiled is better ).
4) Drying com hot air.
After the board cleaned, did rigorose inspection with power magnifying lens, better use stereo microscope ( mine case ).
Some corrosion could be remained, and with thin needle, do the job to remove incrustation.
Measure all resistors and capacitors around the area shown in attached -.
( I found the R2013 open ( measured in 20k scale ), replaced.
After that, the voltages 1.36V and 1.25V apears again!
After all, when power on the oscilloscope, the starting process in the LED panel was slow, found two bad potentiometers ( 5k ), replaced.
Start now is very fast! All controls working again!
Only normal error message due lost calibration.
NVRAM replaced too!
Best Regards,
Helcio